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By varying the angle, however, you should have seen some small differences in your period, especially for 60°. How can you explain this apparent variation of the period with angle?
Two horizontal forces, 240 N and 156 N, are exerted on a canoe. If the these forces are applied in the same directions, find the net horizontal force on the crate.
A charge moves a distance of 2.3 cm in the direction of a uniform electric field having a magnitude of 239 N/C. The electrical potential energy of the charge decreases by 72.3544 × 10-19 J as
Determine the tangential component of the linear acceleration of a point on the edge of the wheel 2.0 after it has started accelerating.
A 0.50 kg ball that is tied to the end of a 2.0 m light cord is revolved in a horizontal plane with the cord making a 30° angle, with the vertical. If the cord can withstand a maximum tension o
Determine the coordinates of the loaded ferryboat relative to the center of the raft. Take the origin to be at the of the raft.
A coil can be considered to be a resistance of 120 ohms and an inductance of 0.5 H in series. The coil is connected across a 180 V rms, 75 Hz line. Find the power.
A transformer operating from 61 V (rms supplies a 16.1 V lighting system for a garden. Eight lights, each rated 62 W, are installed parallel. Find the equivalent resistance of the system.
A swimming pool has dimensions 28.0 m 7.0 m and a flat bottom. The pool is filled to a depth of 1.90 m with fresh water. What is the force exerted by the water on the bottom?
A length of organ pipe is closed at one end. If the speed of sound is 344 m/s, what length of pipe is needed to obtain a fundamental frequency of 68 Hz?
How fast (in rpm) must a centrifuge rotate if a particle 8.06 cm from the axis of rotation is to experience an acceleration of 79000 g?
Use the Lagrangian approach to find the angular frequency of small oscillations about the top position. Note the moment of inertia of the cube I = 2mb2/3 and for the small angle approximation: sin &
How close to the side walk can the flower pot fall before it is too late for a warning shouted from the balcony to reach the man in time? Assume that the man below requires 0.353 s to respond to the
Disregarding friction, how much faster would the ball travel if the cannon were mounted rigidly and all other parameters remained the same?
A small boat is moving at a velocity of 3.35m/s when it is accelerated by a river current perpendicular to the initial direction of mmotion. If the current acceleration is 0.750m/s^2, what will the
A fan at a rock concert is 30 m from the stage, where the sound intensity level is 110 dB. Her eardrums have a diameter of 8.4 mm. How much energy is transferred to each eardrum in one second?
A child bounces a 45 g superball on the side-walk. The velocity change of the superball is from 23 m/s downward to 14 m/s upward. If the contact time with the sidewalk is 1/800s, what is the magnit
Glass photographic plates were once the standard detector for astronomical imaging. Describe the type of detector that has replaced photographic plates and outline what its advantages are.
The mass of a carbon atom is 2.0x10^-26. What is the kinetic energy of a carbon atom moving with a speed of 500 m/s?
A jetliner, traveling northward, is landing with a speed of 62.0 m/s. Once the jet touches down, it has 656 m of runway in which to reduce its speed to 11.6 m/s. Compute the average acceleration (ma
A long solenoid has 1460 turns in a length of 40.0 cm. What current has to flow through the solenoid in order to generate a magnetic field of 3.45 μT in its interior?
If the electron just misses the upper plate as it emerges from the field, find the speed of the electron as it emerges from the field?
A child sitting 1.10m from the center of a merry-go-round moves with a speed of 1.25m/s. calculate the centripetal acceleration of the child, and the net horizontal force exerted on the chile (mass=
What is the angular acceleration of the merry-go-round?(c) How much work does each child do?(d) What is the kinetic energy of the merry-go-round?
The current is a matter of concern to those who live nearby. (a) What is the strength of the field at ground level below one such wire?